IEC 60268-16: Edition 4.0
DOD Adopted ANSI Approved Approved
This part of IEC 60268 specifies objective methods for rating the transmission quality of speech with respect to intelligibility.
The objective of this standard is to provide a comprehensive manual for all types of users of the STI method in the fields of audio, communications and acoustics.
This standard does not provide STI criteria for certification of transmission channels (e.g. criteria for a voice-alarm system).
Three methods are presented, which are closely related and are referred to as STI, STIPA, and STITEL. The first two methods are intended for rating speech transmission performance with or without sound systems. The STITEL method has more restricted uses.
NOTE None of the methods are suitable for the measurement and assessment of speech privacy and speech masking systems, as STI has not been validated for conditions that represent speech privacy applications 1.
The following information is included:
• measurement techniques;
• prediction techniques.
1 Figures in square brackets refer to the Bibliography.
Buy this Standard Now
Or if you answer yes to any of these questions:
- Do you purchase more than $3000 in standards per year?
- Do you purchase many different kinds of standards?
- Do you have multiple employees accessing the same standards?
You may save money by purchasing more comprehensive online access.
* Required field